// Copyright 2021 - 2022 Matrix Origin
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package file

import (
	"testing"

	"github.com/matrixorigin/matrixone/pkg/fileservice"
	"github.com/stretchr/testify/assert"
)

var (
	testPath = "testdir"
	testFile = "file.data"
)

func TestReadAndWriteFile(t *testing.T) {
	fs, err := fileservice.NewMemoryFS(testPath, fileservice.DisabledCacheConfig, nil)
	assert.NoError(t, err)

	v, err := ReadFile(fs, testFile)
	assert.NoError(t, err)
	assert.Empty(t, v)

	assert.NoError(t, WriteFile(fs, testFile, []byte("hello")))
	v, err = ReadFile(fs, testFile)
	assert.NoError(t, err)
	assert.Equal(t, string("hello"), string(v))

	assert.NoError(t, WriteFile(fs, testFile, []byte("world")))
	v, err = ReadFile(fs, testFile)
	assert.NoError(t, err)
	assert.Equal(t, string("world"), string(v))
}
